Rock-crusher.



PATENTED APR. 1l, 1905.

E. C. BACON.

ROCK CRUSHER.

APPLIOATION FILED MAB.. 2a. 1904.

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Patented April 11, 1905.

EARLE C. BACON, OF NINV YORK. N. Y.

ROCK-CRUSHER.

SPECIFICATION forming' part of Letters Patent No. 787,322, dated April 11, 1905.

Application tiled March 23, 1904, Serial No. 199,547.

Be it known that l, Enma-1U. Bxcox, a citizen of the United States, residing' in the city of New York, boroug'h of Brooklyn. in the county of Kings and State of New York, have invented a certain new and useful improvement in lvocklclrushers, of which the followingis a speeilieation.

The invention relates more particularly to Crushers of swing-.jaw type, in which the material is crushed between a lixed and a movable jaw, the latter swinging' between cheekplates or side pieces: and the object of the invention is to provide means Vfor supporting' the chiwk-plates, which means also serve as wearing'- plates or auxiliary cheek-pieces in protecting' the inner surfaces of the crusherframe in the vicinity of thejaw-opening' from the abrading' etlect of the crushing'operation.

The invention consists in certain novel features and details of construction by which the above objects are attained, to be hereinafter described.

The acctnupanying' d rawing's form a part of this specilieation and show a preferred form of the invention.

Figure 1 is a vertical longitudinal section through the forward portion of a swing-Jaw Crusher` showing' the fixed and movable .jaws and a portion of the frame, the location ofthe auxiliary cheek being' indicated in dotted lines. Fig. Q is a similar view with the swing-jaw removed to show the auxiliary cheek and its relation to the main cheek-plate. Fig'. I is a plan view. partly in horizontal section, eorrespomling' to Fig'. Vl. 'lhe remaining' lig'ures are ou a larger scale and show portions in detail. Fig'. i isa face view of one of the cheek-plates, and Fig'. 5 is a similar view of the corresponding' auxiliary cheek-piece. Fig'. (i is a section throug'h a portion of one of the auxiliary cheeks, the section being' takenon thelinetin Fig'. 5 and showing' a portion of one of the holding-bolts. Fig'. T is a horizontal section tlu'oug'h one of the auxiliary cheeks and a portion of the frame and adjacent main cheek-plate, showing' one of the holding-bolts in place.

Similar letters of reference indicate the same parts in all the figures.

A is the frame of the Crusher, l the movable jaw, mounted on a shaft Ff, supported in bearings A' on the frame. and caused to move toward and from the lixed -iaw by any suitable means, as an eccentric, (not represented.) actuating' a pair of tog'g'les, a portion of one of which (marked C) is shown, l) the lixedjaw plate, and E the swing-jaw plate, all of any ordinary or approved construction. The frame is recessed on each side of the swing'- jaw to receive the cheek-plates F F. of chilled iron or steel, serving' the usual function of protecting' this portion of the frame and holding' the lixed-jaw plate in position. The forward edg'e of each cheek-plate is straight and of angular or ridg'ed section to match to the bevel formed by the last corrug'ation on each side of the lixed-jaw plate l), and the upper portion of the rear edg'e is parallel with the front edg'e but plane, while the lower rear edge is of angular section or ridg'ed and inclined toward the front. In the usual construction the inclined edge matches to and is received ina corresponding' V-g'roove formed in the inclined rear wall of the recess, and the cheek-plate is held and holds the lixedliaw plate by being' forced, after the manner of a wedge, into the similarly-formed space.

The life of a cheek-plate depends on the character of the work performed by the Crusher, but is comparatively short, and the substitution of new cheek-plates is freriluently required. ln case the new cheek-plate is of the saine shape and dimensions as the old the substitution may be easily made; but frefluently the ridg'e on the rear edge does not match exactly to the V-g'roove and much labor is involved in chipping' away the groove to permit the proper insertion, the labor being' increased by the narrow space inside the frame, within which the operator must stand during' the chipping' operation. After several such operations tho groove and recess are likely to be much deformed. Another serious evil resulting' from long' use is the wearing' away of the frame in the vicinity of the g'roove by the abrasive action of the crushed material. \\"hen this occurs, it becomes necessary to cut away the interior of the frame and increase the area of the recess sufliciently to include IOO the worn portion and then to insert speciallyformed cheek-plates shaped to match to the altered recess. My improvement is designed to remedy the above objectionable features; and it consists in continuing the lower part of the recesses in the frame rearward and placing in each an auxiliary cheek or wearing piece M, having the front inclined, as at M', to correspond to the cheek-plate and provided with a V-groove m to receive the angular rear edge of the cheek-plate.

The auxiliary cheek is preferably of the form shown in the drawings, having the rear edge plane except for an offset or shoulder lV 2, matching a corresponding shoulder A2 in the outline of the recess and serving to support the weight of the piece. This shape also reduces the weight of the piece by lessening the width of its lower portion, which .need be only of sufficient width to protect the frame along the line of abrasion, and prevents a downward movement while the cheek-plate is being driven to place. Transverse slots m m are `provided in the auxiliary cheek-pieces, having inclined sides analogous to the usual countersink, in which are received bolts N N, having rectangular heads N N', shaped to lie flush with the interior surface of the piece and beveled on the under face to match the slots and extending through holes drilled in the frame to receive them. The bolts are held by nuts N2 N2. Thus arranged the auxiliary cheekpieces may be adjusted to accommodate the main cheek-plates and be maintained in the desired position by the bolts N alone or with the aid of shims L between the rear edges and rear walls of the recess.

The auxiliary cheeks when worn by abrasion may be easily removed and new ones substituted, and any work required in the V-grooves may be conveniently performed by simply removing the pieces from the frame. The adjustable feature permits the employment of cheek-plates, diering slightly from the standard dimensions without changing the recesses.

The invention prolongs the useful period of the crusher, permits necessary repairs to be easily and quickly made, and adds but little to the original cost ofA the machine without increasing its Weight or bulk.

Modifications may be made in the forms and proportions of the auxiliary cheek-pieces as conditions may require in adapting the invention to different types of crushers. The oifset in the rear edge may be omitted and the adjustable features discarded, depending upon simple bolts or other fastening means for holding the auxiliary cheeks in place, as will be readily understood.

I claimw 1. An auxiliary cheek-piece having a shoulder, in combination with a Crusher-frame recessed to receive said cheek-piece and support it by said shoulder, and with a fixed jaw, movable jaw, and cheek-plates, the latter supported and held in place by said cheek-pieces and fixed jaw, and means for adjusting said cheekpiece directly laterally toward and from its adjacent cheek-plate.

2. In a crusher having a fixed jaw, movable jaw, and cheek-plate, an auxiliary cheek-piece having a shoulder on its rear edge and transverse slots in different vertical planes with beveled sides, in combination with the Crusherframe having a recess matching to and receiving said cheek piece, and bolts extending through said slots and frame, and having beveled heads matching said slots for direct lateral adjustment of the auxiliary cheek-piece.

3. In a crusher, a fixed jaw, a movable jaw, the frame having a recess in its inner face with shoulder in the outline of the recess` a cheek-plate, an auxiliary cheek-piece seated in said recess and having a shoulder to match the first-mentioned shoulder whereby the auxiliary cheek piece is held against vertical movement, and means engaging the frame and auxiliary cheek-piece for direct adjustment thereof horizontally toward and from the cheek-plate.

In testimony that I claim the invention above set forth I afx my signaturein presence of two witnesses.

EARLE C. BACON. Vitnesses:

CMAS. J. MoRToN, STANLEY K. GREENE. 

